As the salesman retrieved the key for the demo GranTurismo, I approached the trunk of the sleek silver siren sitting on the showroom floor. Even though I was opening the Maserati’s boot rather than its bonnet, I felt like a pre-teen rifling through a copy a Playboy while the drug store owner helped Mrs. Myers with her prescription. The fact that the Maserati’s electric rear lid opened at all was heartening. And then I saw it: a blue box. Genuine Maserati parts. Fumble, fumble. Uh-oh. A trickle charger. A classy, digital battery booster, but a direct link to the most troublesome car I’d ever owned (a British two-seater named after a man called Trevor). It seems that Maserati’s latest product for the American market is still a bit… problematic. But not for the reasons you might think.